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Draft genome sequences for three unisolated Alnus-infective Frankia Sp+ strains, AgTrS, AiOr and AvVan, the first sequenced Frankia strains able to sporulate in-planta.

ABSTRACT: Actinobacteria from genus Frankia are able to form symbiotic associations with actinorhizal plants including alders. Among them, Sp+ strains are characterized by their ability to differentiate numerous sporangia inside host plant cells (unlike "Sp-" strains unable of in-planta sporulation). Here, we report the first genome sequences of three unisolated Sp+ strains: AgTrS, AiOr and AvVan obtained from Alnus glutinosa, A. incana and A. alnobetula (previously known as viridis), respectively (with genome completeness estimated at more than 98%). They represent new Frankia species based on Average Nucleotide Identity (ANI) calculations, and the smallest Alnus-infective Frankia genomes so far sequenced (~5 Mbp), with 5,178, 6,192 and 5,751 candidate protein-encoding genes for AgTrS, AiOr and AvVan, respectively.

SUBMITTER: Bethencourt L 

PROVIDER: S-EPMC6775861 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Draft genome sequences for three unisolated <i>Alnus</i>-infective <i>Frankia</i> Sp+ strains, AgTrS, AiOr and AvVan, the first sequenced <i>Frankia</i> strains able to sporulate <i>in-planta</i>.

Bethencourt Lorine L   Vautrin Florian F   Taib Najwa N   Dubost Audrey A   Castro-Garcia Lucia L   Imbaud Olivier O   Abrouk Danis D   Fournier Pascale P   Briolay Jérôme J   Nguyen Agnès A   Normand Philippe P   Fernandez Maria P MP   Brochier-Armanet Céline C   Herrera-Belaroussi Aude A  

Journal of genomics 20190917

Actinobacteria from genus <i>Frankia</i> are able to form symbiotic associations with actinorhizal plants including alders. Among them, Sp+ strains are characterized by their ability to differentiate numerous sporangia inside host plant cells (unlike "Sp-" strains unable of <i>in-planta</i> sporulation). Here, we report the first genome sequences of three unisolated Sp+ strains: AgTrS, AiOr and AvVan obtained from <i>Alnus glutinosa</i>, <i>A. incana</i> and <i>A. alnobetula</i> (previously know  ...[more]

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